The quantization of spinors leads to creation and annihilation operators. Since there are two separate scalar terms in the formula, two Hamiltonian operators are available upon quantization. The left ordering Hamiltonian is [1]}
\(\hat{H}^{(1/2)}_{126}|_L = \langle \tilde{a}_6|\tilde{a}_2] \left([a_6|g_1|a_2\rangle -[\tilde{a}_6|\tilde{a}_2\rangle \right)= \hat{F}^{\dagger }_{26} \left(\frac{1}{d_{j_1}}\left( \hat{F}_{61}\hat{E}_{12} + \hat{E}_{16}\hat{F}_{12} \right) - \hat{F}_{62}\right)\,,\) 
